What most likely accounts for the difference between curve A and curve B on the energy diagram?
A. The reaction described by curve B is occurring with a catalyst.
B. The reaction described by curve B is at a different temperature.
C. The reaction described by curve B is under greater pressure.
D. The reaction described by curve B has higher reactant
concentrations.

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.